Create Docker Compose for Redis with Custom Config and ACL (2026)

In this guide, you'll learn how to create a Docker Compose file that properly configures a Redis service with a custom configuration and Access Control List (ACL) file. This configuration is crucial for setting up a secure Redis environment with specific username and password access controls. Understanding Docker Compose in combination with Redis configurations can significantly enhance your application's performance and security.

Key Takeaways

• Learn how to set up Docker Compose for Redis with custom configurations.
• Understand the importance of Redis ACL files for securing your database.
• Implement a Redis setup that avoids hardcoding sensitive information.
• Resolve common issues related to Redis authentication in Docker.

Prerequisites

• Basic understanding of Docker and Docker Compose.
• Familiarity with Redis configurations and the purpose of ACL files.
• Docker and Docker Compose installed on your system.

Step 1: Prepare Your Redis Configuration Files

First, you need to create a custom Redis configuration file and an ACL file. The Redis configuration file will include settings for persistence, logging, and other server parameters, while the ACL file will define the users and their permissions.

# redis.conf
port 6379
requirepass yourSecurePassword
aclfile /usr/local/etc/redis/aclfile

Create an ACL file with the desired user configurations:

# aclfile
user default on nopass ~* >all
user customUser on >yourSecurePassword allcommands ~* +@all

Step 2: Create the Docker Compose File

Next, you'll create a docker-compose.yml file that references your Redis configuration and ACL files. This file will help orchestrate the setup and ensure your Redis instance uses the specified configurations.

version: '3.9'
services:
  redis:
    image: redis:7.0
    container_name: redis-server
    ports:
      - "6379:6379"
    volumes:
      - ./redis.conf:/usr/local/etc/redis/redis.conf
      - ./aclfile:/usr/local/etc/redis/aclfile
    command: redis-server /usr/local/etc/redis/redis.conf

This setup ensures that your Redis instance uses the custom configuration and ACL files located in the same directory as your docker-compose.yml file.

Step 3: Deploy Your Redis Service

With your Docker Compose file ready, you can now deploy your Redis service by running the following command:

docker-compose up

This command will start the Redis service using the configurations defined in your docker-compose.yml file.

Step 4: Verify the Configuration

To ensure that your Redis instance is running with the correct configurations, you can connect to the Redis CLI and test the authentication:

redis-cli -u redis://customUser:yourSecurePassword@localhost:6379

If the connection is successful without any errors, it confirms that your Redis instance recognizes the custom username and password.

Common Errors/Troubleshooting

Here are some common issues that you might encounter and how to resolve them:

• Connection refused: Ensure that the Redis service is running and accessible on the defined port.
• Authentication errors: Double-check your ACL file and ensure the correct password is being used.
• File not found: Verify the paths to your Redis configuration and ACL files in the docker-compose.yml.

Frequently Asked Questions

What is an ACL file in Redis?

An ACL file in Redis defines user access levels and permissions, helping to control who can access specific commands and data.

Why use Docker Compose for Redis?

Docker Compose simplifies managing multi-container Docker applications, allowing easy configuration and deployment of Redis with custom settings.

How do I secure my Redis instance?

Use Redis configuration and ACL files to set strong passwords, define user permissions, and limit access to trusted networks.

Frequently Asked Questions

What is an ACL file in Redis?

An ACL file in Redis defines user access levels and permissions, helping to control who can access specific commands and data.

Why use Docker Compose for Redis?

Docker Compose simplifies managing multi-container Docker applications, allowing easy configuration and deployment of Redis with custom settings.

How do I secure my Redis instance?

Use Redis configuration and ACL files to set strong passwords, define user permissions, and limit access to trusted networks.